A soft iron bar is introduced inside a current carrying solenoid. The magnetic field inside the solenoid

will become zero

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will decrease

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will increase

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will remain unaffected

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Solution

The correct option is C will increase
The magnetic field around a current carrying solenoid is similar to the magnetic field produced by a bar magnet.
When a soft iron bar is introduced inside a current carrying solenoid, the magnetic field inside the solenoid will increase.

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